function abc(){
string Code =
(combobox.SelectedItem.Value != null) ? combobox.SelectedItem.Value.ToString()
: string.Empty;
(save function
....)
}
Anyone knows how to I can proceed with save function if the combobox is null value and it pop up error system null reference exception?
Pravesh Singh
23-Jan-2014Hi Jeet,
You didn't post where you get the NullReferenceException, however it's most likely when you are performing this evaluation
combobox.SelectedItem.Value != null
The ComboBox's SelectedItem property will return null if nothing is selected. If you call the Value property on the null selected item, you'll get a NullReferenceException. What you should be checking is:
combobox.SelectedItem != null